An overfilled cup, an insecure cup or drinking lid, a damaged detachable part or pressure inside a sealed blend can cause a portable blender to leak.
Before removing parts, stop the appliance, disconnect its power supply and wait for all movement to stop; let hot parts and contents cool before handling them.
Is liquid getting into, or coming from inside, the base?
If liquid has entered the motor base or electrical housing, or dark or oily-looking liquid is coming from inside it, stop using it, unplug it only if it is safe to do so, and take your claim, with your receipt, to the place of purchase (the manufacturer warranty is 12 months from the date of purchase). Keep a rechargeable appliance disconnected from its charger; do not open the housing or run another cycle to test it.
If a leak continues after the checks, or the source is unclear, leave the appliance off and use the same help link. Include the full model name and where the liquid appeared.
If a step above directs you to our team, or you need help with an unresolved issue in this article, see our warranty article.
NutriBullet Portable Blender / Portable Blender McLaren
An overfilled cup, an incorrectly locked Cup or Lid, damaged parts or pressure inside the sealed Cup can cause the NutriBullet Portable Blender / Portable Blender McLaren to leak.
Are food and liquid above the MAX line?
- Check whether food and liquid in the NutriBullet Portable Blender / Portable Blender McLaren cup rise above its MAX line; the line applies to the whole mixture, not just the liquid.
- Stop blending and wait until the blades have stopped. If the cup feels hot or warm, use the hot-cup check below before trying to open it.
- For a cool cup, open the Lid and pour off enough mixture to leave the contents below MAX. Twist the Lid back onto the Cup, close the cover and put the Lid Latch upright in its locked position.
- Split a larger recipe into smaller batches; do not add ingredients above the line to replace mixture lost through a leak.
Is the Cup properly aligned and locked onto the Motor Base?
- With the NutriBullet Portable Blender / Portable Blender McLaren switched off and disconnected from its charger, inspect the Cup and Motor Base connection after the blades have stopped.
- For a cool, empty cup, clean its rim and accessible connection surfaces before refitting. Position the Cup so the two alignment dots on the Cup and Motor Base line up.
- The cup must sit securely in its locked position before blending. If it cannot lock or a connecting part is damaged, stop using the affected part and replace it with the correct genuine part.
Is the Lid closed and is its locking latch upright?
- Check the top of the NutriBullet Portable Blender / Portable Blender McLaren: a loose Lid or an open drinking cover leaves an escape route for the drink.
- Once the motor is off and the cup is cool, twist the Lid onto the Cup. Close the drinking cover and move the Lid Latch upright into its locked position.
- The cover should stay shut before blending or carrying. If the lid, cover or latch is damaged, stop using that part and replace it; holding the cover down is not a repair.
Are the cup, lid or blade-side components damaged?
- After cleaning the NutriBullet Portable Blender / Portable Blender McLaren, inspect the cup, lid and accessible connection surfaces in good light. Look for cracks, cloudiness, wear, distortion or a broken closure.
- Stop using a damaged detachable part and replace it with the correct genuine part before blending again. Check the replacement is secure and the drinking closure, where fitted, shuts properly.
- If the integrated blade or motor assembly is damaged, keep the blender off. Do not open the motor housing, attempt to replace its battery, or prise a seal out of the integrated assembly.
Were hot or warm ingredients used?
- Hot or warm ingredients can pressurise the NutriBullet Portable Blender / Portable Blender McLaren Cup and expel its contents.
- If the Cup is hot or warm to the touch, leave it where it is and keep other people from touching it. Do not open it, separate it from the Motor Base, or blend again.
- Allow at least 30 minutes to cool, and longer if it is still warm. Once cool to the touch, slowly open the Lid with the opening pointed away from your face and body, then pour the contents into another vessel.
- Use ingredients at 21°C or cooler for the next blend. If the cooled closure will not open, leave it closed rather than forcing it.
Were carbonated or effervescent ingredients blended?
- Gas from carbonated or effervescent ingredients can build pressure inside the NutriBullet Portable Blender / Portable Blender McLaren cup and force contents out.
- Check drinks, powders and recipe mixes for fizzy or gas-producing ingredients, including soda, baking powder, baking soda and yeast; some protein powders contain them.
- Stop further blending and use the hot-cup procedure above if the vessel has become warm. Use a non-carbonated liquid for the next recipe.
Has repeated blending heated the contents?
- Running repeated cycles heats the NutriBullet Portable Blender / Portable Blender McLaren mixture through blade friction; the resulting pressure can force out contents.
- Stop the motor when a leak appears. Do not run another cycle to locate a leak or clear it.
- If the sealed cup is warm, follow the hot-cup instructions above before opening. Finish the fill-level, assembly and damage checks before making a fresh blend.
Has blended food been left sealed in the Cup?
- Food left sealed inside the NutriBullet Portable Blender / Portable Blender McLaren cup can spoil and ferment, releasing gas and increasing pressure.
- Do not continue blending or carry a pressurised vessel around. If it is warm, use the hot-cup instructions before attempting to open it.
- After blending, access the drink carefully through the drinking spout, pointing the opening away from your face and body. Do not leave blended foods sealed for prolonged periods.
- Once safe to open, empty and clean the cup before preparing another batch.
How do I clean and refit the parts after a spill?
- Turn the NutriBullet Portable Blender / Portable Blender McLaren off, disconnect its charging cable, and wait for the blades to stop before removing the Cup or Lid.
- Empty a cool cup, then remove the Cup and Lid for washing. If the contents are warm or pressurised, leave the cup alone until it has cooled for at least 30 minutes, longer if needed, before slowly opening the Lid away from your face and body.
- Hand-wash the Cup and Lid in warm soapy water and rinse them clean.
- Gently rinse only the blade assembly and wipe away food with a damp sponge or cloth, keeping fingers clear of its sharp edges. NEVER submerge the motor base in water. Do not run the motor base under water; wipe its exterior with a damp cloth instead.
- Dry the exterior with a clean cloth and allow all wet parts to dry thoroughly. Keep the charging connection dry before use or charging.
- Reattach the Cup with its alignment dots lined up with the Motor Base, fit the Lid and lock the Lid Latch upright. Store the blender upright with the Cup attached so the blades are covered.
NutriBullet Flip Stainless
An overfilled or loosely fastened Blending Cup, an open Flip-Top Lid, damaged parts or pressure inside the Cup can make the NutriBullet Flip Stainless leak; carrying the Cup sideways with its To-Go Lid can also spill contents.
Are food and liquid above the MAX line?
- Check whether food and liquid in the NutriBullet Flip Stainless cup rise above its MAX line; the line applies to the whole mixture, not just the liquid.
- Stop blending and wait until the blades have stopped. If the cup feels hot or warm, use the hot-cup check below before trying to open it.
- For a cool cup, turn the blender right-side-up with the Motor Base, Blade, and Lid on top. After shutdown, remove that assembly and reduce the batch below the 475 ml MAX line; the cup’s 590 ml total capacity is not the blending limit. Refit the motor assembly and snap the Flip-Top Lid shut.
- Split a larger recipe into smaller batches; do not add ingredients above the line to replace mixture lost through a leak.
Is the Blending Cup tightly fastened to the Motor Base, Blade, and Lid?
- Keep the NutriBullet Flip Stainless right-side-up, with the Motor Base, Blade, and Lid above the Blending Cup. Unplug the charger and leave the blender undisturbed for 90 seconds before taking it apart.
- With the blades still and the contents cool, remove the motor assembly. Clean the cup and the accessible mating surfaces, then dry them and screw the assembly firmly back onto the cup.
- A flashing yellow light can mean the cup needs tightening; the guide says to continue tightening until the light ring turns white. If it will not fasten securely, inspect for damage and replace the affected detachable part before further use.
Has the Flip-Top Lid snapped completely shut?
- Look at the drinking opening on the NutriBullet Flip Stainless before starting a blend: the Flip-Top Lid must cover and seal it.
- After the blender has shut down and the blade has stopped, clean residue from the drinking spout using the hand-cleaning method below. Close the Flip-Top Lid until it snaps in place.
- Keep the lid shut throughout blending. If the closure is damaged or cannot seal, stop using the damaged part and arrange its replacement.
Is the Cup being carried sideways with the To-Go Lid?
- The NutriBullet Flip Stainless To-Go Lid is not leak-proof, so a correctly fitted lid can still let a drink seep or spill when the Cup tilts.
- Keep the Cup upright when using the To-Go Lid. Close the sipping-spout cover and the sliding straw opening when you are not drinking.
- Carry the Cup upright rather than placing it sideways in a bag. If liquid is escaping through a crack, replace the damaged cup or lid instead of treating it as normal seepage.
Are the cup, lid or blade-side components damaged?
- After cleaning the NutriBullet Flip Stainless, inspect the cup, lid and accessible connection surfaces in good light. Look for cracks, cloudiness, wear, distortion or a broken closure.
- Stop using a damaged detachable part and replace it with the correct genuine part before blending again. Check the replacement is secure and the drinking closure, where fitted, shuts properly.
- If the integrated blade or motor assembly is damaged, keep the blender off. Do not open the motor housing, attempt to replace its battery, or prise a seal out of the integrated assembly.
Were hot or warm ingredients used?
- Hot or warm ingredients can build pressure in the NutriBullet Flip Stainless Cup and force the Flip-Top Lid open or separate the Cup from the motor assembly.
- Stop blending and let the blender shut down completely. Do not try to remove the Blending Cup or open the Flip-Top Lid while the blade is moving.
- Use only refrigerated or room-temperature ingredients at 21°C or cooler. When opening the drinking spout, point it away from your face and body and open slowly, taking care of escaping gas or splatter.
- If the sealed cup is warm or the closure cannot be opened safely, leave the blender off and do not force the parts apart.
Were carbonated or effervescent ingredients blended?
- Gas from carbonated or effervescent ingredients can build pressure inside the NutriBullet Flip Stainless cup and force contents out.
- Check drinks, powders and recipe mixes for fizzy or gas-producing ingredients, including soda, baking powder, baking soda and yeast; some protein powders contain them.
- Stop further blending and use the hot-cup procedure above if the vessel has become warm. Use a non-carbonated liquid for the next recipe.
Has repeated blending heated the contents?
- Running repeated cycles heats the NutriBullet Flip Stainless mixture through blade friction; the resulting pressure can force out contents.
- Do not blend continuously or in consecutive cycles for more than one minute in total.
- Stop the motor when a leak appears. Do not run another cycle to locate a leak or clear it.
- If the sealed cup is warm, follow the hot-cup instructions above before opening. Finish the fill-level, assembly and damage checks before making a fresh blend.
Has blended food been left sealed in the Cup?
- Food left sealed inside the NutriBullet Flip Stainless cup can spoil and ferment, releasing gas and increasing pressure.
- Do not continue blending or carry a pressurised vessel around. If it is warm, use the hot-cup instructions before attempting to open it.
- After blending, access the drink carefully through the drinking spout, pointing the opening away from your face and body. Do not leave blended foods sealed for prolonged periods.
- Once safe to open, empty and clean the cup before preparing another batch.
How do I clean and refit the parts after a spill?
- Unplug the NutriBullet Flip Stainless and leave it undisturbed for 90 seconds so it shuts down completely. Confirm the blades have stopped before taking it apart.
- Keep the Motor Base, Blade, and Lid on top when removing it from the Blending Cup; empty the cup and wash it with soap and water.
- To clean the blade, point the blade downward at an angle. Carefully rinse only the blade area, keeping a thumb or finger over the USB-C port and fingers away from the cutting edges.
- To clean the drinking spout, turn the blade upward and gently rinse only the sip hole with warm water, again shielding the USB-C port. Use the included Cleaning Brush for the straw, under the blades, the sip hole and the vent hole.
- Gently wipe and dry the Motor Base, Blade, and Lid and the outside of the USB-C port with a clean cloth. Rest the motor assembly upright with the Flip-Top Lid open and let the port become completely dry before charging.
- Refit the Blending Cup or Blade Cover for storage so the blades are protected. NEVER submerge the entire Motor Base, Blade, and Lid in water. Do not rinse the entire motor assembly, or put the entire Motor Base, Blade, and Lid in the dishwasher.
NutriBullet Flex Portable / Flex Portable McLaren
An overfilled Cup, an incorrectly fitted Blade Block, an open Sip Cap, a shifted Sip Lid gasket or pressure inside the Cup can cause the NutriBullet Flex Portable / Flex Portable McLaren to leak.
A warm or pressurised Cup must cool before you open it or detach it from the Motor Base.
Are food and liquid above the MAX line?
- Check whether food and liquid in the NutriBullet Flex Portable / Flex Portable McLaren cup rise above its MAX line; the line applies to the whole mixture, not just the liquid.
- Stop blending and wait until the blades have stopped. If the cup feels hot or warm, use the hot-cup check below before trying to open it.
- For a cool cup, remove the Sip Lid with Carry Loop and reduce the batch below MAX. Screw the lid back on clockwise, press the Sip Cap closed until it clicks, and fold the Carry Loop down.
- Split a larger recipe into smaller batches; do not add ingredients above the line to replace mixture lost through a leak.
Is the Blade Block dry and fully fitted into the Blending Cup?
- Switch off the NutriBullet Flex Portable / Flex Portable McLaren, unplug the cable and wait for the blade to stop. If the Cup is warm, follow the hot-cup steps below before detaching it. Once cool and empty, detach the Cup by gripping the Motor Base and Cup rather than pulling on the Sip Lid.
- Stand the vessel upside down on the flat Sip Lid with Carry Loop. Twist the Blade Block clockwise to remove it, keeping fingers clear of the blades. Wash the parts in warm soapy water, rinse, and dry the Blade Block completely.
- Insert the Blade Block blades-first through the bottom of the Blending Cup. Twist counter-clockwise until the built-in soft-stop indicates the correct position; the guide describes some friction as necessary for a tight seal.
- Place the assembled Blade Block and Cup on the Motor Base and gently twist into place without forcing it. A correct lock makes the light ring illuminate white clockwise and flash twice; three orange flashes indicate an incomplete lock.
Has the Sip Cap clicked shut and is the Carry Loop folded down?
- Inspect the NutriBullet Flex Portable / Flex Portable McLaren Sip Lid with Carry Loop: the screw-on lid, hinged Sip Cap and Carry Loop each need their correct position.
- With the Sip Cap closed, screw the Sip Lid clockwise onto the Cup. Press the Sip Cap down over the Sip Spout until you hear and feel a click; that indicates the seal has engaged.
- Fold the Carry Loop down for blending and transport. Its closed position helps protect against accidental spills; if the cap or hinge is broken and cannot close, replace the damaged lid.
Has the Sip Lid gasket shifted during washing or drying?
- Remove the NutriBullet Flex Portable / Flex Portable McLaren Sip Lid with Carry Loop by twisting it counter-clockwise once the blender is off and the contents are cool.
- Inspect the gasket area for trapped moisture or a gasket that has moved out of position. Remove excess moisture and gently guide a displaced Sip Lid gasket back into place.
- Let the lid air-dry fully before refitting it so moisture is not trapped around the gasket or seal. Screw the lid on clockwise and check that the Sip Cap clicks shut.
- This refitting instruction applies to the Sip Lid gasket. If the lid or its gasket is damaged, stop using the damaged part and replace it.
Are the cup, lid or blade-side components damaged?
- After cleaning the NutriBullet Flex Portable / Flex Portable McLaren, inspect the cup, lid and accessible connection surfaces in good light. Look for cracks, cloudiness, wear, distortion or a broken closure.
- Stop using a damaged detachable part and replace it with the correct genuine part before blending again. Check the replacement is secure and the drinking closure, where fitted, shuts properly.
- If the Blade Block is bent or damaged, stop using it and ask for a replacement. Do not open the Motor Base or attempt to replace its battery.
Were hot or warm ingredients used?
- Hot or warm ingredients can pressurise the NutriBullet Flex Portable / Flex Portable McLaren Cup and expel its contents.
- If the Cup is hot or warm to the touch, leave it where it is and keep other people from touching it. Do not open it, separate it from the Motor Base, or blend again.
- Allow at least 30 minutes to cool, and longer if it is still warm. Once cool to the touch, slowly open the Sip Lid with Carry Loop with the opening pointed away from your face and body, then pour the contents into another vessel.
- Use ingredients at 21°C or cooler for the next blend. If the cooled closure will not open, leave it closed rather than forcing it.
Were carbonated or effervescent ingredients blended?
- Gas from carbonated or effervescent ingredients can build pressure inside the NutriBullet Flex Portable / Flex Portable McLaren cup and force contents out.
- Check drinks, powders and recipe mixes for fizzy or gas-producing ingredients, including soda, baking powder, baking soda and yeast; some protein powders contain them.
- Stop further blending and use the hot-cup procedure above if the vessel has become warm. Use a non-carbonated liquid for the next recipe.
Has repeated blending heated the contents?
- Running repeated cycles heats the NutriBullet Flex Portable / Flex Portable McLaren mixture through blade friction; the resulting pressure can force out contents.
- Stop the motor when a leak appears. Do not run another cycle to locate a leak or clear it.
- If the sealed cup is warm, follow the hot-cup instructions above before opening. Finish the fill-level, assembly and damage checks before making a fresh blend.
Has blended food been left sealed in the Cup?
- Food left sealed inside the NutriBullet Flex Portable / Flex Portable McLaren cup can spoil and ferment, releasing gas and increasing pressure.
- Do not continue blending or carry a pressurised vessel around. If it is warm, use the hot-cup instructions before attempting to open it.
- After blending, access the drink carefully through the drinking spout, pointing the opening away from your face and body. Do not leave blended foods sealed for prolonged periods.
- Once safe to open, empty and clean the cup before preparing another batch.
Does the liquid come from the Motor Base rather than the Cup?
- Fluid escaping from the NutriBullet Flex Portable / Flex Portable McLaren Motor Base, especially with swelling, an unusual smell, overheating or a change in colour or shape, is a stop-use condition.
- Turn the blender off immediately, avoid touching the liquid and keep it away from skin, eyes, clothes and other surfaces. Do not open the housing or attempt to replace the battery.
- If battery fluid touches skin, eyes or clothes, immediately rinse the affected area with water and contact a doctor or other appropriate medical provider. Take your claim, with your receipt, to the place of purchase (the manufacturer warranty is 12 months from the date of purchase) before any further use.
How do I clean and refit the parts after a spill?
- Turn the NutriBullet Flex Portable / Flex Portable McLaren off, unplug its charging cable and wait for the blade to stop. Keep the Silicone Charge Port Cover in place while cleaning.
- Before detaching the Cup, check whether it feels hot or warm. If it does, leave it on the Motor Base without touching or opening it for at least 30 minutes, and longer until it is cool.
- Once the Cup is cool, slowly open the Sip Lid with Carry Loop away from your face and body and pour the contents into another vessel. Close the lid before taking the empty cup apart.
- Grip the Cup and Motor Base and gently twist the Cup off without pulling on the Sip Lid or pushing down. Stand the empty vessel upside down on the flat lid; twist the Blade Block clockwise to detach it, keeping hands clear of the sharp blades, then remove the Sip Lid counter-clockwise.
- Hand-wash the Blade Block, Blending Cup and Sip Lid with Carry Loop in warm soapy water, then rinse them. Wipe ingredient spills from the Motor Base with a damp cloth. NEVER submerge the motor base in water. Do not put the motor base under running water.
- Remove excess water from the lid’s gasket area and gently guide its gasket back into place if it moved. Allow the lid to air-dry fully and dry the Blade Block completely.
- Insert the Blade Block through the bottom of the Cup and twist counter-clockwise to its soft-stop. Refit the Sip Lid clockwise, click the Sip Cap shut, then gently twist the Cup and Blade Block into the Motor Base without force. Store upright with the blades covered by the Cup.
NutriBullet GO
An overfilled or unlocked Cup, damaged parts or pressure from hot ingredients, carbonation or repeated blending can cause the NutriBullet GO to leak.
Are food and liquid above the MAX line?
- Check whether food and liquid in the NutriBullet GO cup rise above its MAX line; the line applies to the whole mixture, not just the liquid.
- Stop blending and wait until the blades have stopped. If the cup feels hot or warm, use the hot-cup check below before trying to open it.
- For a cool cup, turn the assembled blender upside down so the Cup is upright. Twist the Motor Base anti-clockwise off the cup, remove excess ingredients below the 300 ml MAX line, then fasten the base clockwise onto the cup again.
- Split a larger recipe into smaller batches; do not add ingredients above the line to replace mixture lost through a leak.
Is the Cup fully locked onto the Motor Base?
- With the NutriBullet GO off, wait until the blades have stopped and turn the blender upside down so the Cup is upright. For cool contents, twist the Motor Base anti-clockwise to remove it.
- Clean the Cup rim and the accessible blade area using the cleaning steps below, and inspect the connection for damage. Lower the inverted Motor Base onto the cup rim and twist it clockwise to fasten firmly.
- When you wake the blender, a flashing blue light shows that the cup is locked and ready. Alternating red and blue lights mean it is not fully locked; keep twisting until securely fitted. Do not force damaged parts together.
Are the cup, lid or blade-side components damaged?
- After cleaning the NutriBullet GO, inspect the cup, lid and accessible connection surfaces in good light. Look for cracks, cloudiness, wear, distortion or a broken closure.
- Stop using a damaged detachable part and replace it with the correct genuine part before blending again. Check the replacement is secure and the drinking closure, where fitted, shuts properly.
- If the integrated blade or motor assembly is damaged, keep the blender off. Do not open the motor housing, attempt to replace its battery, or prise a seal out of the integrated assembly.
Were hot or warm ingredients used?
- Hot liquids can pressurise the sealed NutriBullet GO blending vessel and make contents erupt when it is opened.
- Stop blending. If the vessel feels warm, allow it to cool before trying to detach the blade and base.
- Once the temperature has decreased, slowly and carefully untwist the blade with the opening pointed away from your body. Use cool or room-temperature ingredients for subsequent blends.
- Do not keep blending a warm or leaking mixture or force apart a cup that will not open.
Were carbonated ingredients blended?
- Gas from carbonated beverages can build pressure inside the NutriBullet GO cup and force contents out.
- Do not blend carbonated beverages in the sealed cup.
- Stop further blending and use the hot-cup procedure above if the vessel has become warm. Use a non-carbonated liquid for the next recipe.
Has repeated blending heated the contents?
- Running repeated cycles heats the NutriBullet GO mixture through blade friction; the resulting pressure can force out contents.
- Do not run more than two consecutive 30-second cycles or operate continuously for longer than one minute.
- Stop the motor when a leak appears. Do not run another cycle to locate a leak or clear it.
- If the sealed cup is warm, follow the hot-cup instructions above before opening. Finish the fill-level, assembly and damage checks before making a fresh blend.
Has blended food been left sealed in the Cup?
- Food left sealed inside the NutriBullet GO cup can spoil and ferment, releasing gas and increasing pressure.
- Do not continue blending or carry a pressurised vessel around. If it is warm, use the hot-cup instructions before attempting to open it.
- For the NutriBullet GO, release internal pressure carefully after cooling and do not leave the mixture in a sealed blending vessel.
- Once safe to open, empty and clean the cup before preparing another batch.
How do I clean and refit the parts after a spill?
- Turn the NutriBullet GO off and disconnect its USB cable. Wait until the motor and blades have completely stopped before handling the cup.
- For cool contents, invert the assembled blender so the Cup is upright, then twist the Motor Base anti-clockwise off the Cup. If the vessel feels warm, let it cool before carefully untwisting the blade with the opening away from your body.
- Empty the Cup and hand-wash it and its lid with warm soapy water, then rinse.
- Gently rinse only the blade assembly and carefully clean it with a damp sponge or cloth, keeping away from the sharp edges. NEVER submerge the motor base in water. Do not run the motor base directly under water; the blade assembly must not go in the dishwasher.
- Clean and dry spilled mixture on the blender and on the surrounding work surface before using it again. The guide says not to operate the NutriBullet GO when wet.
- Secure the Blade Cover onto the Motor Base when the Cup is removed for storage, and keep all parts together where they cannot be damaged.
Still need help? Chat with us and give us your model name and product code.
The full steps for this model are in its user guide: NutriBullet Portable Blender / Portable Blender McLaren user guide (PDF)
The full steps for this model are in its user guide: NutriBullet Flip Stainless user guide (PDF)
The full steps for this model are in its user guide: NutriBullet Flex Portable / Flex Portable McLaren user guide (PDF)
The full steps for this model are in its user guide: NutriBullet GO user guide (PDF)